Yellowstone’s supervolcano shows new magma movement deep underground, raising concerns about future eruptions and ...

T he Yellowstone supervolcano is extremely well studied, but that doesn’t mean it is fully understood. Researchers have just ...

Under a swath of Kentucky hills and hollows is a limestone labyrinth that became the heartland of a national park. The surface ... A sandstone and shale cap, as thick as 50 feet in places, acts ...

The national park forms one unit of the North Cascades National Park Service Complex. The two other units—Ross Lake National Recreation Area and Lake Chelan National Recreation Area—contain ...